https://www.searchlock.com/search?q=chaldean+alphabet
Les Visible says one became the other, and I believe him. He's very well researched, and doens't put out half-cocked information. I'll have to look that up on Bibliotecapleyades later.
More on this:
https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=which%20chadeans%20became%20hebrews
And yup, Bibliotecapleyades does have something on this:
http://www.bibliotecapleyades.net/merovingians/merovingios_08.htm
